首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1383篇
  免费   73篇
管理学   71篇
民族学   15篇
人口学   132篇
丛书文集   7篇
理论方法论   180篇
综合类   8篇
社会学   974篇
统计学   69篇
  2024年   3篇
  2023年   32篇
  2022年   13篇
  2021年   16篇
  2020年   60篇
  2019年   76篇
  2018年   95篇
  2017年   107篇
  2016年   81篇
  2015年   73篇
  2014年   68篇
  2013年   237篇
  2012年   82篇
  2011年   71篇
  2010年   38篇
  2009年   47篇
  2008年   51篇
  2007年   51篇
  2006年   42篇
  2005年   36篇
  2004年   25篇
  2003年   30篇
  2002年   28篇
  2001年   21篇
  2000年   12篇
  1999年   10篇
  1998年   6篇
  1997年   6篇
  1996年   3篇
  1995年   4篇
  1994年   3篇
  1993年   8篇
  1992年   3篇
  1991年   2篇
  1990年   1篇
  1989年   2篇
  1987年   4篇
  1986年   1篇
  1985年   2篇
  1982年   2篇
  1980年   1篇
  1979年   1篇
  1968年   1篇
  1967年   1篇
排序方式: 共有1456条查询结果,搜索用时 15 毫秒
531.
Abstract

Objective: On US college campuses, mental health problems are highly prevalent, appear to be increasing, and are often untreated. Concerns about student mental health are well documented, but little is known about potential variations across the diversity of institutions of higher education. Participants: Participants were 43,210 undergraduates at 72 campuses that participated in the Healthy Minds Study from 2007 to 2013. Methods: Multivariable logistic regressions focus on associations between institutional characteristics and student mental health and treatment utilization. Results: The following institutional characteristics are associated with worse mental health: doctoral-granting, public, large enrollment, nonresidential, less competitive, and lower graduation rates. Among students with apparent mental health problems, treatment utilization is higher at doctorate-granting institutions, baccalaureate colleges, institutions with small enrollments, and schools with strong residential systems. Conclusions: Although high rates of mental health problems and low treatment utilization are major concerns at all types of institutions of higher education, substantial variation occurs across campuses.  相似文献   
532.
ABSTRACT

Little is known about rates and correlates of service use or the role that social context plays in service engagement among homeless youth. This study compares two distinct service areas and uses a social network approach to examine how environmental factors (e.g., neighborhood), social factors (e.g., social capital and network engagement) and individual level factors that relate to service use patterns among homeless youth in Los Angeles, California. A sample of 938 youth was recruited from three drop-in centers in two distinct service sites. Individuals were surveyed about their individual and social network attributes. Univariable and multivariable analyses were utilized to understand the influence of social-contextual variables on service use. Service use behaviors varied across site and service type with youth in Hollywood showing greater engagement than youth at the Beach site. Across both sites and several service types, staff emotional support was positively correlated with levels of service use. The site comparisons also point to the fact that even within a single geographic area, like Los Angeles County, client profiles and rates of service use can significantly vary. Future research needs are presented with specific emphasis on understanding the needs of non-service-seeking youth.  相似文献   
533.
534.
535.
Despite the importance given to employment opportunities as a primary motive for migration, previous studies have paid insufficient attention to the kinds of jobs that are more likely to retain workers in their countries of origin. We use information from a panel survey of Mexican adults to examine how job characteristics affect the risk of international migration. The sampling strategy and overall size of the survey allow us to analyze the effect of employment characteristics on migration from urban areas, which have much greater labor market diversity, and to separate our analysis by gender. We also distinguish migrants according to whether they migrate for work or for other reasons. We find informality to be a significant predictor of international migration. Even after controlling for individual factors including workers’ wages, as well as various household- and community-level predictors, we find that workers employed in the informal sector have significantly higher odds of migrating than their counterparts in the formal sector. The pervasive nature of informality in many developing countries from which a high proportion of international migrants originate may therefore create a constant supply of workers who are predisposed to migrate. Our findings thus have important implications for a proper understanding of the effects of economic development on migration.  相似文献   
536.
In 2018, a sequence of powerful education strikes and work stoppages across the United States sent shock waves through the country's public education system. This eruption of collective workers' organization was strongly led by women teachers responding to the current crisis of care, demanding resources, dignity, and justice for themselves, the children they teach, and their communities. While mainstream reports often represent these actions as traditional labor and/or feminist struggles, our research demonstrates that they were sites of more nuanced response to “care extraction” in education, and for understanding how constructions of gender and gender injustice both gave rise to the strikes and shaped their unfolding. Drawing on in-depth interviews with 10 teacher-activists who participated in the West Virginia strikes, we examine how teachers' labor is being transformed in a context of postindustrial austerity, illustrate the complex political identity of the strike actions, and explore the relationship between specific constructions of gendered labor and collective organizing in US public education today.  相似文献   
537.
Research on competition amongst women has largely focused on relational aggression amongst adolescents, but less explored are women’s understandings of the origins of competition as it relates to comparisons amongst women and feminine ideals. Drawing on semi-structured, in-depth interviews with 30 collegiate women, we find young women’s stories constructed comparisons and competition amongst women as never-ending and seemingly natural, although they point to restricted societal expectations of femininity as its origin. Women drew from the interrelated topics of perfection-seeking, media portrayals, relationships, and consumerism to explain how they and other women negotiated feminine ideals. Even if participants understood these actions as ultimately undermining their self-image, they still perceived achieving goals of femininity as connected with perfection and happiness. We define such ongoing comparisons and competition as a feminine rivalry, as women perceived other women as direct competitors and thus understanding of the nature of the competition. We conclude by considering how college-aged women’s negotiations of feminine ideals to seemingly bolster or secure their social positioning in a hierarchy of femininity, at times in contradictory ways, offers additional insight into connections between interpersonal dynamics, expectations, and stereotypes of women.  相似文献   
538.
The existing literature on diverse teams suggests that diversity is both helpful to teams in making more information available and encouraging creativity and damaging to teams in reducing cohesion and information sharing. Thus the extant literature suggests that diversity within teams is a double-edged sword that leads to both positive and negative effects simultaneously. This literature has not, however, fully embraced the increasing calls in the broader groups literature to take account of time in understanding how groups function [e.g. Cronin, M. A., Weingart, L. R., &; Todorova, G. (2011). Dynamics in groups: Are we there yet? The Academy of Management Annals, 5, 571–612]. We review the literature on diverse teams employing this lens to develop a dynamic perspective that takes account of the timing and flow of diversity's effects. Our review suggests that diversity in groups has different short-term and long-term effects in ways that are not fully captured by the currently dominant double-edged sword metaphor. We identify an emerging perspective that suggests a tropical depression metaphor—that has the potential, over time, to develop either into a dangerous hurricane or diffuse into a rainstorm that gives way to sunshine, as more apt to capture the dynamic effects of diversity in teams. We conclude by outlining an agenda for redirecting future research on diverse teams using this more dynamic perspective.  相似文献   
539.
540.
Infants from low-socioeconomic status (SES) households hear a projected 30 million fewer words than their higher-SES peers. In a recent study, Hirsh-Pasek et al. (Psychological Science, 2015; 26: 1071) found that in a low-income sample, fluency and connectedness in exchanges between caregivers and toddlers predicted child language a year later over and above quantity of talk (Hirsh-Pasek et al., Psychological Science, 2015; 26: 1071). Here, we expand upon this study by examining fluency and connectedness in two higher-SES samples. Using data from the NICHD Study of Early Child Care and Youth Development, we sampled 20 toddlers who had low, average, and high language outcomes at 36 months from each of 2 groups based on income-to-needs ratio (INR; middle and high) and applied new coding to the mother–toddler interaction at 24 months. In the high-INR group, the quality of mother–toddler interaction at 24 months accounted for more variability in language outcomes a year later than did quantity of talk, quality of talk, or sensitive parenting. These results could not be accounted for by child language ability at 24 months. These effects were not found in the middle-INR sample. Our findings suggest that when the quality of interaction, fluency and connectedness, predicts language outcomes, it is a robust relation, but it may not be universal.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号